Kortuem, Gerd and Kray, Christian and Gellersen, Hans (2005) Sensing and visualizing spatial relations of mobile devices. In: The 18th annual ACM symposium on User interface software and technology (UIST ' 05). ACM, pp. 93-102.
Location information can be used to enhance interaction with mobile devices. While many location systems require instrumentation of the environment, we present a system that allows devices to measure their spatial relations in a true peer-to-peer fashion. The system is based on custom sensor hardware implemented as USB dongle, and computes spatial relations in real-time. In extension of this system we propose a set of spatialized widgets for incorporation of spatial relations in the user interface. The use of these widgets is illustrated in a number of applications, showing how spatial relations can be employed to support and streamline interaction with mobile devices.
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